Fastener-inserting machine.



J. F. DAVEY;

FASTENER INSEBTING MACHINE.

APPL'ICATION FILED OCT. 24. 1917.

Patented Miy 6, 1919.

ITEM SATES hl JOHN E. DAVEY,.OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY IVIESNEASSIGNMENTS,

TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A COR- PORATION OF NEW JERSEY.

FASTENER-INSERTING MACHINE.

Specification of Letters Patent.

Patented May CHS, 1919..

Application filed October 24, 1917. Serial No. 198,237.

chines, of which the following description,

in connection with the accompanying drawings, is a specification, like reference charn acters on the drawings indicating like parts in the several figures.

This invention relates to fastener inserting machines and is illustrated as embodied in a machine of the type shown in Letters Patent of the United States No. 1,122,310 granted Dec. 29, 1914, on an application of F. A. Rumney, yalthough it will be obvious that it may find application to other machines of similar type.

An object of the invention is to provide an improved arrangement for effecting movement of an operating tool of a fastener inserting machine which shall be both simple and effective and shall avoid certain diiii-` cu-lties found in the prior art constructions.

In the type of machine shown in the Rumney patent, for example, the operating tools are supported in a guiding head for reciprocating movement toward and away from the work `and are retracted, after movement against the work, by means of spring actuated levers jointed to a lateral projection on the head of each tool. In the course of their movement, these projections enter slots in the guiding head and are directed thereinto by their retraclting levers. When a tool needs to be changed or replaced, it must first be disconnected from its retracting lever and the new tool 0bviously should be reconnected to said vlever,v It sometimes happens, however, that, owing to the carelessness of the operators or for similar reasons, the new tool is not properly connected to its retracting lever and the machine is started with the projecting head of the tool displaced so that it does not enter the slot provided for it in the guiding head. When this happens, the blow of the hammer exerts an undue pressure on the frame which usually yresults in breaking the frame of the machine at the neck portion connecting the guiding head with the rest of the frame.

A feature of the invention relates to an arrangement for connecting operating means, such as an operating lever, with an operating tool constructed and arranged to avoid this danger of breakage and preferably so arranged that it will avoid the necessity for a slot in the guiding` head. In the illustrated construction, a retracting lever has an operative connection with an operating tool of the mechanism constructed and arranged to overhang the edge of the guiding head in a plurality of positions.

Still further to insure against such breakage and in accordance with another feature of the invention, the operative connection between the tool yand the retracting lever is so constructed and arranged that it would break before the frame of the machine would give way.

Other features of the invention will appear after a consideration of the following specification taken in connection with the accompanying drawings in which,-

Figure 1 is a perspective view of a portion of a duplex eyeleting machine in which the present invention has been embodied;

Fig. 2 is a sectional view through an operating tool showing a portion of its re tracting lever and the connecting member therebetween; and

Fig. 3 is a plan view of the punch and setting die and the related parts.

The parts here shown are preferably embodied in a machine of the type illustrated. in Letters Patent of the United States No. 934,066 granted Sept. 14, 1909, upon the application of George Goddu. For the sake of simplicity, only the parts directly concerned with the invention have been illustrated and they are mounted upon an auxiliary frame 10 and a feeding frame l2. The feeding frame 12 is pivoted upon a vertical bearing and supports guiding heads 14 and 16 which furnish the bearings for reciprocating operating tools. These tools coni-- prise oppositely disposed punches I and oppositely disposed sets S which co-act with a centrally disposed anvil 18 and an upsetting die 20 also supported by the feeding frame. The depression of the operating tools against the work is effected by means of cam operated levers 22 and 24 carrying suitable adjustable hammers 26 and 28 which are adapted to co-act with the sets and punches, respectively. The guiding heads 14 and 1G are supported upon thc feeding frame 12 by -narrow neck portions 30 and 82 and the feeding movement is effected by means of a link 34 pivotally connected to the portion 32.

The retraction of the punches, after they have been driven against the work, is effected by means of retraction levers 40 pivotally supported upon rods 42 and actuated by means of a spring 44 continuously to urge the punches away from the work. Similarly, retraction levers 46 are provided for the sets which are also mounted upon the rod 42 and are actuated by means of a spring 48 to continuously urge the sets away from the work. It will be noted that the retraction mechanism for the sets is of novel construction.

The particular arrangement of the connecting member interposed between the levers and the tools constitutes an important feature of this invention and it will be seen that the retraction levers 46 are connected to the outer ends of the set S by means of connecting members 50 which overhang the edge of the guiding heads 14 and 1G, respectively. The connecting members 50 are secured to the sets by means of screws 52 and the ends of the retraction levers enter an aperture 54 in the overhanging ends of the connecting members. The connecting members are preferably constructed of soft steel for a reason which will become later apparent. The securing screws 52 serve also as abutments for the springs 56 within the set, which springs serve to press outwardly the customary spindles 58. The action of the springs 4 4 and 48 upon the retraction levers is limited in the usual fashion by means of projections 60 coperating with abutments upon the frame to limit the outward movement of the retraction levers. The disconnection of the retraction levers from the punches and sets, respectively, is made possible by means of springs 62 surrounding the rods 42 and allowing endwise movement of the levers with respect to the rods and the frame. From an inspection of big. 3, it will be seen that the radius out the outside edge of the guiding head 14 is so related to the inner radius of the overhanging connecting member 50 that when the connecting member is disconnected from the retraction lever 46, a movement thereof through a considerable arc, here approximately 180, is possible.

It will also be noted from Fig. 3 that the punch P is provided with an offset G4 which is recessed for the reception of the end of the retraction lever 40 and that a suitable slot is provided in the head 14 for the reception of this offset portion. In the construction shown in the Rumney patent the set is provided with a similar offset and the head is recessed for the reception of this offset.

In the operation of the machine, it becomes necessary to change the tools as the size and style of fasteners is varied. This is accomplished, for example, by moving the retraction levers 46 laterally and then removing the tools from the guiding head. In case the operator is careless and neglects to reinsert the end of the retraction lever 4G in the offset upon the head of the tool, then there is a possibility that this offset portion will rest against the guiding head, and, in the case of the sets, against the portion of the head which lies toward the punch. If the machine is started with the tool in this position, a very considerable pressure is exerted upon the guiding head when the hammer strikes against the tool for the reason that the design of the machine is such that the head of the tool is supposed to be depressed below the surface of the upper side of the head, this being rendered pos sible bv the slot which receives the offset portion mentioned. This same difculty might also be experienced if the springs 62 upon the rods 42 should become inefficient and fail to hold the retraction levers in engagement with the tools.

With the improved arrangement provided by this invention, this difficulty is avoided for the reason that the connecting member 50 which overhangs the edge of the head 14 naturally tends to fall outside the lower et ge of said head as it is supported in an angular position. When the hammer strikes upon the set, therefore, it can do no harm so long as the connecting member 50 is in any one of the positions included within an arc of 180 extending around the lower side of the head 14. A slabbed-oif portion is provided upon that side of the head in which said connecting member is naturally positioned but the range of movement of the connecting member is not limited to this slabbed-off portion. If by any chance the connecting member 50 does not rest in such a position when inserted that it will overhang the outer edge of the head and does rest against the top of the head adjacent the punch, then the difficulty will be cared for by reason of the relative physical dimensions and material strengths of the soft steel connecting mem ber and the neck of the frame. These are such that a blow against the top set will result in bending or in breaking the connecting member before it breaks the cast iron frame, for example at the neck connecting the guiding head 14 with the feeding frame 12. With the lower head of a duplex machine, the diiiiculty is not as pronounced because the effect of gravity tends to remove the tool from the head 16 in case it has not been connected to the retraction lever l16 when inserted by the operator.

The general operation of the machine whereby the punch and set are brought alternately into position for operation upon nthe work and the head moved laterally to feed the work is the same as that described in the patents above-mentioned and will not be further described herein.

Having now described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a fastener inserting machine, a tool, a frame constructed and arranged to support said tool for movement toward and away from the work to be operated upon, means for moving said tool toward the work, and means arranged to retract said tool from the work, one of said means having a connection to the tool constructed and arranged to overhang the edge of the supporting frame.

2. In a fastener inserting machine, a tool, a guiding head for said tool arranged to support it for movement toward and away from the work, said head being supported upon a frame by means of a neck portion, means for moving said tool toward the work, means arranged to retract said tool from the work, and connections between one of said means and the tool including a member projecting outwardly from the head of the tool, said connecting member and said neck being constructed and arranged so that, when subjected to an unusual bending stress, the connecting member will break sooner than the neck portion of the frame.

3. In a fastener inserting machine, a tool,

' a frame constructed and arranged to support said tool for movement toward and away from the work, means Co-acting with one end of the tool adapted to impart an operating movement to said tool toward the work, and means arranged to retract said tool from the work, the part of said means which is connected to the tool being arranged to overhang the edge of the supporting frame.

4. In a fastener inserting machine, a tool, a guiding head for said tool arranged to support it for movement toward and away from the work, hammer means co-acting with one end of the tool, said head being supported upon a4 frame by means of a neck portion, and means for retracting said tool including a connecting member projecting outwardly from the head of the tool, the relative cross-sections and material strengths of said connecting member and the neck portion of the frame being so proportioned that, when subjected to a common blow, the connecting member will break and relieve the strain upon said neck portion.

5. In a fastener inserting machine, a tool, a guiding head for said tool arranged to support it for movement toward and away from the work, hammer means for depressing the tool against the work, and means for retracting the tool away from the work including a 'connecting member arranged to overhang the edge of said guiding head in a plurality of different positions.

'6. In a fastener inserting machine, a tool, a guiding head for said tool arranged to support the same for up and down movement in a direction at an angle to the vertical, hammer means for depressing the tool against the work, and means for retracting the tool including an overhanging connecting member, said guiding head being designed to allow the connecting member to overhang the edge of the head in a plurality of positions to which it may be guided by gravity.

7. In a fastener inserting machine, a plurality of tools, a guiding head arranged to support said tools side by side for up and down movement toward and away from the work, means co-acting with one end of the tools for depressing the same against the work, and means for retracting one of said tools including a connecting member arranged to overhang the edge of the guiding head, said guiding head being designed to allow the connecting member to overhang the edge of the head throughout a considerable arc on the side of the head away from the other tool.

8. In a fastener inserting machine, a guiding head arranged to support two supplementary tools for up and down movement toward and away from the work in a line at an angle to the vertical, hammer means co-acting with one end of said tools to depress the same against the work, and means for retracting the tool located at the lower side of the head comprising connecting means arranged to overhang the edge of the head, said head being constructed and arranged to allow said connecting member to overhang the head throughout a considerable arc on the lower side of the head away from the other tool.

In testimony whereof I have signed my name to this specification.

JOHN F. DAVEY.

Copies o this patent may be obtained for five cents each, by addressing the Commissioner or Patente, Washington, JD. t3. 

